The cocktail seemed an unlikely candidate to start either a revolution or a renaissance, but somehow over the past decade it has managed to become the center of both. After being off the radar for half a century, the crafted cocktail is now celebrated everywhere from the corner bar to week-long festivals that draw thousands. As fascinating as today’s artisan-driven or tech-savvy craft-cocktail bars can be, there’s also a need for cocktail comfort food—exciting drinks easily prepared by...